The Best Pub To Visit

Three guys are drinking at their usual neighborhood pub, when they begin to compare the best pubs they've ever been to.
The first guy says, "Best place I was ever at is 'MacKinnon's Scottish Pub'. Every three Guinness you buy on a Saturday night, you get one free!"
"Aw, that's nothing!" the second man counters. "My best place was 'The Captain's Bounty', an Irish pub that'll give you a free drink, no matter what you order, for every two that you buy!"
The third man shakes his head, "No, no, no, the best place to go to is an American bar in Los Angeles, where you can get a free second drink, a third, a fourth, whatever, all night long! And you can even go upstairs and have sex!"
His two friends don't believe him at all. The first guy asks, "You found a place where you can do all that?!"
The third man shakes his head, "No, not me. But, my sister found out about it!"